package com.qingcheng.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.qingcheng.dao.BrandMapper;

import com.qingcheng.entity.PageResult;
import com.qingcheng.pojo.goods.Brand;
import com.qingcheng.service.goods.BrandService;
import org.springframework.beans.factory.annotation.Autowired;
import tk.mybatis.mapper.entity.Example;

import java.util.List;
import java.util.Map;

@Service
public class BrandServiceImpl implements BrandService {
    @Autowired
    private BrandMapper brandMapper;
    @Override
    public List<Brand> findALL() {
        return brandMapper.selectAll();
    }


    /**
     * 分页查询
     * @param page 页码
     * @param size 每页记录数
     * @return 分页结果
     */
    @Override
    public PageResult<Brand> findPage(int page, int size) {
        PageHelper.startPage(page,size);
        Page<Brand> brands = (Page<Brand>) brandMapper.selectAll();

        return new PageResult<Brand>(brands.getTotal(),brands.getResult());
    }



    /**
     * 构建条件查询
     * @param searchMap
     * @return
     */
    private Example createExample(Map<String,Object> searchMap){
        Example example = new Example(Brand.class);
        Example.Criteria criteria = example.createCriteria();
        //名称条件
        if (searchMap.get("name")!=null && !"".equals(searchMap.get("name"))){
            criteria.andLike(("name"),"%"+ (String)searchMap.get("name")+"%");
        }
        //首字母
        if (searchMap.get("letter")!=null && !"".equals(searchMap.get("letter"))){
            criteria.andLike(("letter"),(String)searchMap.get("letter"));
        }
        return example;

    }

    /**
     * 条件查询
     * @param searchMap 查询条件
     * @return
     */
    @Override
    public List<Brand> findList(Map<String, Object> searchMap) {
        Example example = createExample(searchMap);
        return brandMapper.selectByExample(example);
    }

    /**
     * 分页+条件
     * @param searchMap
     * @param page
     * @param size
     * @return
     */
    @Override
    public PageResult<Brand> findPage(Map<String, Object> searchMap, int page, int size) {
        PageHelper.startPage(page,size);
        Example example = createExample(searchMap);
        Page<Brand> brands = (Page<Brand>) brandMapper.selectByExample(example);
        return new PageResult<Brand>(brands.getTotal(),brands.getResult());
    }

    /**
     * 根据ID查询
     * @param id
     * @return
     */
    @Override
    public Brand findById(Integer id) {
        return brandMapper.selectByPrimaryKey(id);
    }

    /**
     * 新增
     * @param brand
     */
    @Override
    public void add(Brand brand) {
        brandMapper.insert(brand);
    }


    /**
     * 修改
     * @param brand
     */
    @Override
    public void update(Brand brand) {
        brandMapper.updateByPrimaryKeySelective(brand);
    }

    /**
     * 删除
     * @param id
     */
    @Override
    public void delete(Integer id) {
        brandMapper.deleteByPrimaryKey(id);
    }
}
